I have installed OCC on my system (widows 64-bit) but I couldn't find this directory
ros/adm/win64 as told in building modules for Rebuildin OCC on windows platform
so what is the problem ? and how can I get that ???
Overlook, please file 'BUILD.Windows' located at the .\OCCT654\ros directory.
It will explain you what to do if you want to change building configuration.
After that call 'msvc.bat' file and build OCCT.
Don't forget that before building OCCT you should build 3dparty products for the chosen configuration.